What is the source of my voltage leak?

Asked by May 31, 2016 at 12:48 AM about the 2000 Chevrolet Cavalier Base Coupe

Question type: Maintenance & Repair

Hello, recently my battery has been dying on me (twice in the last month). I
had the battery and alternator checked out and both are fine. I was told it's
probably some accessory or switch acting up. So I check each fuse to see
if I could find any significant source of current while the car was off. I've
found two fuses (well three but that was because the door was open); the
instrument panel cluster and the power ACC/stoplamp circuits...fuse. I
found both to be necessary to maintain a running car. Both fuses are active
when the car has no ignition key in it; running about 180 mA when I
connect the multi meter, evening out around 80-70 mA a few moments
later. I'm not sure if this is normal, any ideas?

Also I tested the ACC with the door closed.

2 Answers

24,315

Keep in mind when testing for a parasitic drain on the battery, that the one or more modules will remain active ("awake") for at least ten minutes from the last time the door was open, this will cause a false high reading. To accurately test you need to either wait ten minutes after closing/opening the door before putting the meter on the batt OR pull the door fuse so that circuit is no longer keeping the computer in an active state. 180mA is too high for a vehicle overnight, but that may be normal shortly after you open/close the door. It can take up to an hour for some modules to go to sleep. see this link here for a better explanation: http://www.aa1car.com/library/battery_runs_down.htm.

2 out of 2 people think this is helpful.

alright so I did a proper test, leaving the multi meter on the ACC fuse for about 40-50 mins, and it would seem that it's drawing a normal 12 mA current when at rest. Nothing else seems to draw any current. There doesn't seem to be any loose connections...I don't understand where this power is going. For the time being, I've disconnected my radio...maybe those 12 mA are my problem somehow.

Your Answer

Add photo

Related Questions

  • Lean To Rich Threshold Sensor Voltage 13 answers

    Hi, I have a Chevy Cavalier, and I have been getting bad gas mileage for the past couple weeks. I normally get around low 30mpg. Now I have been getting about 20mpg. I got my engine scanned in cas...

    2000 Chevrolet Cavalier LS

    -

    Maintenance & Repair

  • leak 4 answers

    whats the additative to stop a small radiator leak

    Chevrolet Cavalier

    -

    Maintenance & Repair

  • i have a leak under the car could it be the water pump"? 1 answer

    1999 Chevrolet Cavalier

    -

    Maintenance & Repair

  • 2002 2.2L cavalier vin 4 9 answers

    first thank you for listening to my question, even though i think i know my own answer. just looking for confirmantion i guess. ive been a quality mechanic for more than 20 years, owning my own busi...

    2002 Chevrolet Cavalier LS

    -

    Maintenance & Repair

  • Leaking at rear of tranny. Replaced rear seal (tail shaft). What is next most likely source of leak? 1 answer

    Drops of red trans. fluid appearing at exactly same places as before we replaced the rear seal. (Pan, coolant lines, are definitely not leaking). My Sub parks at slight angle (rear down) in the drive...

    1991 Chevrolet Suburban R1500

    -

    Maintenance & Repair

Cavalier

Looking for a Used Cavalier in your area?

CarGurus has 1,006 nationwide Cavalier listings and the tools to find you a great deal.

ZIP:

Search Chevrolet Cavalier Questions

Chevrolet Cavalier Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,910
#2 dandyoun
dandyoun
Reputation 1,290
#3 mbar1
mbar1
Reputation 1,180
View All

Related Models For Sale

Used Chevrolet Malibu
915 Great Deals out of 79,357 listings starting at $1,500
Used Honda Civic
667 Great Deals out of 89,882 listings starting at $1,299
Used Chevrolet Camaro
206 Great Deals out of 30,789 listings starting at $1,217
Used Chevrolet Impala
587 Great Deals out of 31,465 listings starting at $799
Used Toyota Corolla
766 Great Deals out of 73,024 listings starting at $1,962
Used Ford Mustang
454 Great Deals out of 45,520 listings starting at $1,999
Used Pontiac Sunfire
319 listings starting at $3,975
Used Chevrolet Corvette
122 Great Deals out of 20,508 listings starting at $3,000
Used Ford Focus
564 Great Deals out of 56,728 listings starting at $1,095
Used Honda Accord
821 Great Deals out of 85,701 listings starting at $988
Used Toyota Camry
1,012 Great Deals out of 90,766 listings starting at $650
Used Ford Taurus
228 Great Deals out of 20,381 listings starting at $2,258
Used Chevrolet Silverado 1500
1,686 Great Deals out of 174,330 listings starting at $1,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.